Used primarily in peptide synthesis as a chiral building block, this compound serves as a protected amino acid derivative featuring an alkene handle for further functionalization. The Fmoc group enables orthogonal protection in solid-phase peptide synthesis, allowing stepwise assembly of peptides under mild basic conditions. The terminal alkene side chain permits post-assembly modifications via cross-metathesis or click chemistry, making it valuable for constructing peptide conjugates, macrocycles, or bioconjugation probes. Its stereochemistry ensures enantioselective incorporation critical for biological activity in synthetic peptides.